# Copyright 2021 Tianmian Tech. All Rights Reserved.
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Copyright 2019 The FATE Authors. All Rights Reserved.
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from kernel.utils import consts


class Promoter(object):
    # noinspection PyAttributeOutsideInit
    def register_iter_transfer(self, transfer_variables):
        self.cur_iter_transfer = transfer_variables.begin_iter

    def sync_cur_iter(self, cur_iter, suffix=tuple()):
        self.cur_iter_transfer.remote(obj=cur_iter, role=consts.PROVIDER, suffix=suffix)
        self.cur_iter_transfer.remote(obj=cur_iter, role=consts.ARBITER, suffix=suffix)


class Provider(object):
    def register_iter_transfer(self, transfer_variables):
        self.cur_iter_transfer = transfer_variables.begin_iter

    def get_cur_iter(self, suffix=tuple(), member_id_list=None):
        cur_iter = self.cur_iter_transfer.get(idx=0, suffix=suffix, member_id_list=member_id_list)
        return cur_iter
